46 (112) 



A. Capsula sessilis vel subsessilis (tomentosa; foliorum epidermis mucigera) 



a. Folia 5-foliolato-pinnata, tomentosa (foliola dentata, rhachis alata; flores miDores ; 

 embryo oleosus cotyledone interiore transversim plicata; species mexicana) 



27. P. tomentosa Jacq. 



b. Folia biternata, glabra (foliola subintegerrima, rhachis nuda; flores majores; sp. 

 ecuadorensis) 28. P. lachnocarpa Benth. 



B. Capsula stipitata 



a. Cotyledones (interior certe, excepta P. connaracea) plicato-curvatae, oleo, vix 

 amylo (nisi in P. connaracea) foetae; Capsula subglabrata, excepta P. costata et 

 Sonorensi (in P. urvilleoidi et P. laeta e germine aucto tantum, in P. hidentata 

 et P. subauriculata omnino non nota); flores minores, excepta P. laeta et P. sub- 

 atiriculata; rami subteretes, lenticelloso-striati; folia glabra vel pube tenera induta 

 (epidermide mucigera) 



aa. Folia ternata (illa Urvüleae glabrae in mentem revocantia, sed impunctata 



et reti utriculorum laticiferorum fusco subtus notata , stipulis majoribus 



falcatis instructa; flores flavidi; sepala petaloidea petaiaque utriculis latici- 



feris fuscis striata; species brasiliensis) 29. P. urvilleoides ßadlk. 



bb. Folia -o-foliolato-pinnata (interdum depauperata, ternata — in P. costata') 



a. Foliola nervis lateralibus arcuato-adscendentibus 



aa. Petiolus nudus, rhachis nuda vel marginata 



* Foliola oblique clathrato-venosa; Capsula breviter tomen- 

 tosa, sexcostata (sp. mexicana) 



30. P. costata Schlecht. & Ch. 

 ** Foliola transversim venosa; Capsula glabra, valvarum 

 Costa mediana evanida tricostata (sp. guatemalensis) 



31. P. scarlatina Eadlk. 

 ßß. Petiolus marginatus vel uti rhachis alatus; foliola reticulato- 

 venosa, glandulis deflexo-adpressis complanatis apice plerum- 

 que flabellato-4-cellularibus ornata (sp. peruvianae) 



* Petiolus alatus, foliola pellucido-punctata, subintegerrima 



32. P. laeta Eadlk. 

 ** Petiolus marginatus, foliola impunctata, fibris sclerenchy- 



maticis brevibus instructa 

 f Foliola lanceolata, inferiora basi bidentata 



33. P. bidentata Eadlk. 

 ff Foliola elliptica, inferiora basi subauriculato-bidentata 



34. P. subauriculata Eadlk. 

 ß. Foliola nervis lateralibus patentissimis, glandulis subscutatis subim- 



mersis instructa; petiolus rhachisque marginata (sp. novogranatensis) 



35. P. connaracea Tr. & PI. 

 .cc. Folia biternata, rarius depauperata (rhachi marginato-alata) 



a. Foliola serrato-dentata, subtus glabra, punctis lineolisque pellucidis 

 conspicuis sat crebris ; filamenta glabra (sp. antillana) 



36. P. jamaicensis Macf. 



ß. Foliola subincise lobato-dentata, subtus (saepius dense) pubcscentia, 



punctis pellucidis nullis vel parvis tantum ; filamenta pilosa (sp. 



centroamericana) 37. P. costaricensis Eadlk. 



dd. Folia (foliolis parvis subcentimetralibus) varie composita, inferiora ternata 

 vel trisecta tantum, superiora B-foliolato-pinnata, summa transeuntia in 

 biternata vel interdum plane biternata; rami leviter sulcato-costati, praeser- 

 tim in costis cano-puberuli (sp. mexicana, fruticulum parvum squarrosum 

 cirris subscandentem tantum exhibens) . .38. P. Sonorensis Wats. 



